#wenyan pre::before {
    display: block;
    content: "";
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="12" viewBox="0 0 450 130"><ellipse cx="65" cy="65" rx="50" ry="52" stroke="rgb(220,60,54)" stroke-width="2" fill="rgb(237,108,96)"/><ellipse cx="225" cy="65" rx="50" ry="52"  stroke="rgb(218,151,33)" stroke-width="2" fill="rgb(247,193,81)"/><ellipse cx="385" cy="65" rx="50" ry="52" stroke="rgb(27,161,37)" stroke-width="2" fill="rgb(100,200,86)"/></svg>');
    background-repeat: no-repeat;
    width: 100%;
    height: 16px;
}